共查询到20条相似文献,搜索用时 15 毫秒
1.
Kishiko Ogawa Katsuhiko Suzuki Mitsuharu Okutsu Kyoko Yamazaki Shoji Shinkai 《Immunity & ageing : I & A》2008,5(1):13
Background
Reactive oxygen species (ROS), including free radicals, oxygen ions, and peroxides, are implicated in cell damage. The objective of this study was to investigate whether the spontaneous production of ROS from neutrophils changes with age and is associated with the conventional inflammatory markers. 相似文献2.
T.L. Buhr A.A. Young Z.A. Minter C.M. Wells D.C. McPherson C.L. Hooban C.A. Johnson E.J. Prokop J.R. Crigler 《Journal of applied microbiology》2012,113(5):1037-1051
Aims
To develop test methods and evaluate the survival of Bacillus anthracis ?Sterne and Bacillus thuringiensis Al Hakam spores after exposure to hot, humid air.Methods and Results
Spores (>7 logs) of both strains were dried on six different test materials. Response surface methodology was employed to identify the limits of spore survival at optimal test combinations of temperature (60, 68, 77°C), relative humidity (60, 75, 90%) and time (1, 4, 7 days). No spores survived the harshest test run (77°C, 90% r.h., 7 days), while > 6·5 logs of spores survived the mildest test run (60°C, 60% r.h., 1 day). Spores of both strains inoculated on nylon webbing and polypropylene had greater survival rates at 68°C, 75% r.h., 4 days than spores on other materials. Electron microscopy showed no obvious physical damage to spores using hot, humid air, which contrasted with pH‐adjusted bleach decontamination.Conclusions
Test methods were developed to show that hot, humid air effectively inactivates B. anthracis ?Sterne and B. thuringiensis Al Hakam spores with similar kinetics.Significance and Impact of the Study
Hot, humid air is a potential alternative to conventional chemical decontamination. 相似文献3.
Antonio Dominguez-Ramos Michael Held Ruben Aldaco Matthias Fischer Angel Irabien 《The International Journal of Life Cycle Assessment》2010,15(6):557-566
Background, aim, and scope
In order to assess the environmental sustainability of a novel wastewater treatment process based on power an electrochemical reactor by photovoltaic solar modules (photovoltaic solar electrochemical oxidation), a life cycle approach was considered to quantify the CO2 equivalent (CO2-eq.) emissions coming from the two supplying power systems to the electrochemical process: conventional grid power or photovoltaic solar power under Spain frame conditions. 相似文献4.
A study on the applicability of implantable microchip transponders for body temperature measurements in pigs 总被引:1,自引:0,他引:1
Background
The applicability of an electronic monitoring system using microchip transponders for measurement of body temperatures was tested in 6-week-old conventional Danish weaners infected with classical swine fever virus (CSFV). Subcutaneous tissue temperatures obtained by the implantable transponders were compared with rectal temperatures, recorded by a conventional digital thermometer. 相似文献5.
Katinka Belák Frank Koenen Hans Vanderhallen Christian Mittelholzer Francesco Feliziani Gian Mario De Mia Sándor Belák 《Acta veterinaria Scandinavica》2008,50(1):34
Background
The aim of this study was to compare the tissue distribution and pathogenicity of three virulence variants of classical swine fever virus (CSFV) and to investigate the applicability of various conventional diagnostic procedures. 相似文献6.
Anja Strangfeld Franka Hierse Rolf Rau Gerd-Ruediger Burmester Brigitte Krummel-Lorenz Winfried Demary Joachim Listing Angela Zink 《Arthritis research & therapy》2010,12(1):R5
Introduction
We used the data of the German biologics register RABBIT, a nationwide prospective cohort study, to investigate the risk of new or recurrent malignancy in patients with rheumatoid arthritis (RA) receiving biologics compared to conventional disease modifying anti-rheumatic drugs (DMARDs). 相似文献7.
Background
While conventional cloning methods using restriction enzymes and polynucleotide ligase are adequate for most DNAs, fragments made by the polymerase chain reaction are difficult to clone because the amplifying DNA polymerase tends to add untemplated nucleotides to the 3'-termini of the amplified strands. Conservative site-specific recombinases offer an efficient alternative to conventional cloning methods. 相似文献8.
Senthilkumar Sivaprakasam Surianarayanan Mahadevan Sudharshan Sekar Susheela Rajakumar 《Microbial cell factories》2008,7(1):15
Background
High salinity (1–10% w/v) of tannery wastewater makes it difficult to be treated by conventional biological treatment. Salt tolerant microbes can adapt to these saline conditions and degrade the organics in saline wastewater. 相似文献9.
Background
It is important to develop innovative therapies for advanced stage cancers in addition to the conventional therapies including chemotherapy, radiation and surgery. Antigen-specific immunotherapy has emerged as a novel alternate therapy for advanced stage cancers, which may be employed in conjunction with conventional therapies. 相似文献10.
L.H. Markiewicz J. Honke M. Haros D. Świątecka B. Wróblewska 《Journal of applied microbiology》2013,115(1):247-259
Aims
Investigation of intestinal bacterial groups involved in phytate degradation and the impact of diets with different phytate contents on phytase activity.Methods and Results
Faecal samples of adults on conventional (n = 8) or vegetarian (n = 8) diets and breastfed infants (n = 6) were used as an inoculum for modified media supplemented with phytate. Populations of Gram‐positive anaerobes (GPA), lactic acid bacteria (LAB), Proteobacteria–Bacteroides (P‐B), coliforms and anaerobes were studied. The PCR‐DGGE analysis revealed a random distribution of DGGE profiles in the dendrograms of GPA, P‐B and coliforms, and a partially diet‐specific distribution in the DGGE dendrograms of LAB and anaerobes. The degradation of phytic acid (PA) was determined with HPLC method in supernatants of the cultures. Regardless of the diet, the Gram‐positive anaerobes and LAB displayed the lowest ability to degrade phytate, whereas the coliforms and P‐B cultures produced higher amounts of intermediate myo‐inositol phosphates. Bacterial populations grown in a nonselective medium were the most effective ones in phytate degradation. It was the vegetarians' microbiota that particularly degraded up to 100% phytate to myo‐inositol phosphate products lower than InsP3.Conclusions
A diet rich in phytate increases the potential of intestinal microbiota to degrade phytate. The co‐operation of aerobic and anaerobic bacteria is essential for the complete phytate degradation.Significance and Impact of the Study
This study provides insights on the effect of diet on specific metabolic activity of human intestinal microbiota. 相似文献11.
Torben W Bennedsgaard Stig M Thamsborg Frank M Aarestrup Carsten Enevoldsen Mette Vaarst Anna B Christoffersen 《Acta veterinaria Scandinavica》2006,48(1):24-6
Background
Quarter milk samples from cows with high risk of intramammary infection were examined to determine the prevalence of Staphylococcus aureus (SA) and penicillin resistant SA (SAr) in conventional and organic dairy herds and herds converting to organic farming in a combined longitudinal and cross-sectional study. 相似文献12.
Background
Since the sterilising activity of new antituberculosis drugs is difficult to assess by conventional phase III studies, surrogate methods related to eventual relapse rates are required. 相似文献13.
Background
The conventional superposition methods use an ordinary least squares (LS) fit for structural comparison of two different conformations of the same protein. The main problem of the LS fit that it is sensitive to outliers, i.e. large displacements of the original structures superimposed. 相似文献14.
Cecilia Hamilton Ulf Emanuelson Kristina Forslund Ingrid Hansson Torkel Ekman 《Acta veterinaria Scandinavica》2006,48(1):11-7
Background
Mastitis is one of the major threats to animal health, in organic farming as well as conventional. Preliminary studies of organic dairy herds have indicated better udder health in such herds, as compared to conventional herds. The aim of this paper was to further study mastitis and management related factors in certified organic dairy herds. 相似文献15.
Eyjólfur Reynisson Hélène L Lauzon Hannes Magnússon Rósa Jónsdóttir Guerún ólafsdóttir Viggó Marteinsson óli Guemundur Hreggviesson 《BMC microbiology》2009,9(1):250
Background
The bacteriology during storage of the North-Atlantic cod has been investigated for the past decades using conventional cultivation strategies which have generated large amount of information. This paper presents a study where both conventional cultivation and cultivation independent approaches were used to investigate the bacterial succession during storage of cod loins at chilled and superchilled temperatures. 相似文献16.
Amit Kapur Cheryl Baldwin Mary Swanson Nana Wilberforce Giovanna McClenachan Mark Rentschler 《The International Journal of Life Cycle Assessment》2012,17(4):377-387
Purpose
The goal of this study was to use life cycle assessment (LCA) methodology to assess the environmental impacts of industrial and institutional cleaning products that are compliant with the Green Seal Standard for Cleaning Products for Industrial and Institutional Use, GS-37, and conventional products (non-GS-37-compliant) products. 相似文献17.
Hsien Hui Khoo Reginald B. H. Tan 《The International Journal of Life Cycle Assessment》2010,15(4):338-345
Background, aim, and scope
Worldwide, the production of biodegradable and compostable plastics has steadily grown. In Part 1 (Khoo et al. 2010), life cycle assessment (LCA) was applied to compare the production stages of a bio-based bag (made from polyhydroxyalkanoate or bio-plastic (PHA)) with polyethylene plastic bag. The scope of the study is within the context of Singapore and does not include other types of conventional or bio-based polymers (e.g., polylactic acid (PLA), thermoplastics, high-density polyethylene (HDPE), EPS, etc). This article (part 2) proposes to investigate the end-of-life options of both bags. 相似文献18.
Association mapping of common bacterial blight resistance QTL in Ontario bean breeding populations 总被引:1,自引:0,他引:1
Background
Common bacterial blight (CBB), incited by Xanthomonas axonopodis pv. phaseoli (Xap), is a major yield-limiting factor of common bean (Phaseolus vulgaris L.) production around the world. Host resistance is practically the most effective and environmentally-sound approach to control CBB. Unlike conventional QTL discovery strategies, in which bi-parental populations (F2, RIL, or DH) need to be developed, association mapping-based strategies can use plant breeding populations to synchronize QTL discovery and cultivar development. 相似文献19.
Randi T Garmo Steinar Waage Ståle Sviland Britt IF Henriksen Olav Østerås Olav Reksen 《Acta veterinaria Scandinavica》2010,52(1):11
Background
The objectives of this study were to investigate whether there were differences between Norwegian Red cows in conventional and organic farming with respect to reproductive performance, udder health, and antibiotic resistance in udder pathogens. 相似文献20.